Myopic children wearing orthokeratology at night will be the study group

Device: Orthokeratology lenses

Nightly use of orthokeratology lenses to correct the refractive errors

Other Names:

Menicon Z Night Lens 2

Menicon Z Night Lens 2 Toric

Others

Myopic children wearing single-vision spectacles in the daytime will serve as control group

Device: Spectacles

Daily use of single vision lenses to correct refractive errors

Other Names:

Glasses

Eyeglasses

Detailed Description:

Apart from being effective in reducing low to moderate myopia, orthokeratology has been shown to have potential in retarding myopic progression. The central cornea is flattened and peripheral optics altered in orthokeratology and it has been suggested that orthokeratology slows myopic progression through the alteration of peripheral optics. The aim of the current study is to investigate the changes in peripheral refraction and aberration in children wearing orthokeratology (study group) and single-vision spectacles (control group).

Systemic or ocular conditions which may affect refractive development (e.g. Down syndrome, ptosis)

Contacts and Locations

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Please refer to this study by its ClinicalTrials.gov identifier: NCT00978679